Start here.

The rest just falls into place.

There is no institution left in America that can be called democratic, and thus there is no internal mechanism to prevent a descent into barbarity.

“The political role of corporate power, the corruption of the political and representative processes by the lobbying industry, the expansion of executive power at the expense of constitutional limitations, and the degradation of political dialogue promoted by the media are the basics of the system, not excrescences upon it,” the political philosopher Sheldon Wolin wrote in “Democracy Incorporated: Managed Democracy and the Specter of Inverted Totalitarianism.”

"The Deadly Rule of the American Oligarchs." By Chris Hedges, Russia Insider, 2/21/18 (emphasis added).